Improvement in revolving fire-arms



F. H. HARRINGTON.

Revolver. I No. 20607. Patented June 15, 1858 N.PETERS,PHOTO-LITMOGRAPHEH, WASHINGTON. D C.

UNITED STATES PATENT OFFICE.

r. u. HARRINGTON, OF SPRINGFIELD, MASSACHUSETTS, ASSIGNOR To HoEAoESMITH AND DANL. B. WESSON.

IMPROVEMENT lN REVOLVING FIRE-ARMS.

Specification forming part of Letters Patent No. 20,607, dated June 15,1858.

To all whom it may concern.-

Be it known that I, FRANois H. HARRING- TON, of Springfield, in thecounty of Hampden and State of Massachusetts, have invented a new anduseful Improvement in the Construction of Revolving Fire-Arms; and I dohereby declare the following to be a full and exact description of theconstruction and operation of the same, reference being had to theaccompanying drawing, and to the letters ofreferenee marked thereon, inwhich- A represents the revolving cylinder. B represents the hammerdirectly at-tached to the mainspringof the lock. 0 represents ajointedand movable thumb-piece of the hammer. D represents the strap-bolt. Erepresents a spring. F represents a dog which acts on the ratchet-wheelH when the hammer is drawn back, causing the cylinder A to move one partof its revolution.

The construction of the arm is substantially as follows: In the topstrap which connects the breech and barrel a recess is cut, and intothis recess is fitted the stop-bolt D. This bolt' is hinged near itsforward end, and is of such form that it projects downward through thestrap and into a notch in the periphery of the cylinder. This is for thepurpose of holding the cylinder firmly at the moment of discharge.

The hammer is made'in two parts, the thumbpiece L being movable on themain body by ajoint, and so formed that in discharging it passes underthe end of the stop-bolt without disturbing the hold of that bolt uponthe cylinder.

The operation of this improvement is readily understood. In working thepistol the jointed thumbpiece 0 moves first, and before raising thehammer disen gages the catch of the stopbolt and allows the cylinder torevolve, so that as thehammer is drawn back to its position for firingthe cylinder, by the action of the lever F, is carried one step forwardin its circle and another chamber is brought in the line.

of the barrel. The stop-bolt then falls into the notch on the cylinder.The cylinder is firmly held as before.

What I claim as myinvention, and desire to secure by Letters Patent, is

The combination of the stop-bolt D, and the jointed thumb-piece G of thehammer, with the. revolving cylinder, substantially in the manner andfor the purpose herein specified.

FRANCIS H. HARRINGTON.

